Skip to main content
U.S. Department of Energy
Office of Scientific and Technical Information

Modeling Water Electrolysis in Bipolar Membranes

Journal Article · · Journal of the Electrochemical Society (Online)
Bipolar membranes (BPMs) have proven useful in numerous electrochemical energy conversion and storage applications, including fuel cells and electrolyzers. However, water dissociation in bipolar membrane electrolysis cells (BPMECs) is a complicated phenomenon that occurs via several different pathways. In this work, we develop a model based on the Poisson-Nernst-Planck system that includes a multistep water-dissociation mechanism to observe the fundamental processes that contribute to BPMEC performance. The model, which is validated to in-house experimental data, demonstrates that the junction potential is the most significant contributor to the total electrolysis voltage. We investigated the effects of water-dissociation catalysts and found that the optimal catalyst $$p{K}_{a}$$ depends on how the catalyst is integrated into the BPM (although values near 7 are typically best, in accordance with conventional wisdom). We also simulated the water content across the BPM and found that dry-out is not a significant issue when the membrane is in contact with liquid water on both sides. The species conservation approach taken here leads to a physical understanding of the system without using any fitting parameters.
Research Organization:
National Renewable Energy Laboratory (NREL), Golden, CO (United States)
Sponsoring Organization:
USDOE Office of Energy Efficiency and Renewable Energy (EERE), Hydrogen and Fuel Cell Technologies Office (EE-3F)
Grant/Contract Number:
AC36-08GO28308
OSTI ID:
1660192
Report Number(s):
NREL/JA-5500-77051; MainId:25014; UUID:250cf7e8-1855-426d-a338-7e3c46ba9427; MainAdminID:16264
Journal Information:
Journal of the Electrochemical Society (Online), Journal Name: Journal of the Electrochemical Society (Online) Journal Issue: 11 Vol. 167; ISSN 1945-7111
Publisher:
IOP PublishingCopyright Statement
Country of Publication:
United States
Language:
English

References (45)

Use of Bipolar Membranes for Maintaining Steady-State pH Gradients in Membrane-Supported, Solar-Driven Water Splitting journal September 2014
Self Humidifying Hybrid Anion-Cation Membrane Fuel Cell Operated Under Dry Conditions journal September 2009
Water dissociation in bipolar membranes: Experiments and theory journal March 1978
The steady and non-steady state properties of bipolar membranes journal July 1972
Electric field effects on proton transfer between ionizable groups and water in ion exchange membranes journal February 1984
Water splitting in ion exchange membranes journal March 1985
Bipolar membranes under forward and reverse bias conditions. Theory vs. experiment journal September 1994
The origin and elimination of water splitting in ion exchange membranes during water demineralisation by electrodialysis journal January 1979
Electroosmotic drag in polymer electrolyte membranes: an electrophoretic NMR study journal October 1999
Ion transport and water dissociation in bipolar ion exchange membranes journal August 1983
Limiting current density and water dissociation in bipolar membranes journal March 1997
Water splitting activity of oxygen-containing groups in graphene oxide catalyst in bipolar membranes journal September 2019
Impact of carbonation processes in anion exchange membrane fuel cells journal February 2018
Measurements of water uptake and transport properties in anion-exchange membranes journal June 2010
Desalination feasibility study of an industrial NaCl stream by bipolar membrane electrodialysis journal July 2014
Transient ion exchange of anion exchange membranes exposed to carbon dioxide journal November 2015
Theoretical design strategies of bipolar membrane fuel cell with enhanced self-humidification behavior journal March 2016
Experimental and theoretical investigations of steady and transient states in systems of ion exchange bipolar membranes journal January 2004
A comprehensive mathematical model of water splitting in bipolar membranes: Impact of the spatial distribution of fixed charges and catalyst at bipolar junction journal May 2020
Quantitative determination of acidic groups in functionalized graphene by direct titration journal June 2016
Quantifying Electric Field Enhancement of Water Dissociation Rates in Bipolar Membranes journal October 2018
Transparent Bipolar Membrane for Water Splitting Applications journal August 2017
Solar-Driven Reduction of 1 atm of CO 2 to Formate at 10% Energy-Conversion Efficiency by Use of a TiO 2 -Protected III–V Tandem Photoanode in Conjunction with a Bipolar Membrane and a Pd/C Cathode journal September 2016
Electrolysis of CO 2 to Syngas in Bipolar Membrane-Based Electrochemical Cells journal November 2016
Synergistic Electrochemical CO 2 Reduction and Water Oxidation with a Bipolar Membrane journal November 2016
Reclamation of Aniline Wastewater and CO 2 Capture Using Bipolar Membrane Electrodialysis journal August 2016
Hybrid Anion and Proton Exchange Membrane Fuel Cells journal June 2009
Strong electric field effects on proton transfer between membrane-bound amines and water journal August 1979
Solar conversion of CO2 to CO using Earth-abundant electrocatalysts prepared by atomic layer modification of CuO journal June 2017
Investigations of the ex situ ionic conductivities at 30 °C of metal-cation-free quaternary ammonium alkaline anion-exchange membranes in static atmospheres of different relative humidities journal January 2007
New insights into the electrochemical hydrogen oxidation and evolution reaction mechanism journal January 2014
Photo-assisted water splitting with bipolar membrane induced pH gradients for practical solar fuel devices journal January 2015
High performance electrospun bipolar membrane with a 3D junction journal January 2017
The balance of electric field and interfacial catalysis in promoting water dissociation in bipolar membranes journal January 2018
Mechanism of oxygen reactions at porous oxide electrodes. Part 2—Oxygen evolution at RuO2, IrO2 and IrxRu1−xO2 electrodes in aqueous acid and alkaline solution journal January 2011
Evaluating the interfacial reaction kinetics of the bipolar membrane interface in the bipolar membrane fuel cell journal January 2013
Deviations from Ohm's Law in Weak Electrolytes journal September 1934
Electrodialysis with Bipolar Membranes for Valorization of Brines journal December 2015
Modeling of Conductive Transport in Proton-Exchange Membranes for Fuel Cells journal January 2000
A Dusty Fluid Model for Predicting Hydroxyl Anion Conductivity in Alkaline Anion Exchange Membranes journal January 2010
Effects of Temperature and Carbon Dioxide on Anion Exchange Membrane Conductivity journal January 2011
Calculating the Electrochemically Active Surface Area of Iridium Oxide in Operating Proton Exchange Membrane Electrolyzers journal January 2015
Understanding Transport at the Acid-Alkaline Interface of Bipolar Membranes journal January 2016
PEM/AEM Junction Design for Bipolar Membrane Fuel Cells journal January 2017
Model Supported Analysis of Water Management in Alkaline Membrane Direct Methanol Fuel Cells text January 2017

Similar Records

Simple model for ac impedance spectra in bipolar membranes
Journal Article · Thu Sep 19 00:00:00 EDT 1996 · Journal of Physical Chemistry · OSTI ID:420817

Understanding Multi-Ion Transport Mechanisms in Bipolar Membranes
Journal Article · Mon Nov 09 19:00:00 EST 2020 · ACS Applied Materials and Interfaces · OSTI ID:1828548

Comparing Advanced Bipolar Membranes for High-Current Electrodialysis and Membrane Electrolysis
Journal Article · Thu Feb 13 19:00:00 EST 2025 · ACS Energy Letters · OSTI ID:2569643